Railway-tie.



F. E. DAVIDSON. RAILWAY TIE.

APPLICATION FILED sBPT.s,1909.

956,045, Patented Apr. 26, 1910.

ATTORNEY UNITED sTATns PATENT OFFICE.

FRANK s. DAVIDSON, or

CEDARHURST; NEW YORK.

RAILWAY-TIE.

To allwhom 'it 'may concern:

Be it known thatA I, FRANK E. Dax- Instru7 of Cedarhurst, Nassau county, State of .Yew York, have invented new and useful lmprovementsin Railway-T ies, of which the i following is a full, clear` and exact specification, such as will enable others skilled in the art to which it appertains to make and i use the same.

My invention relates to a reinforced courrete railway tie and its special object is to improve the devices for mounting the rail on the tie in .sueh a manner that the rail will he securely held and vet permitted to give vertically'and present a somewhat yielding .support for the traffic.

The invention involves other features` of importance all of which will be Vfully set y forth hereinafter and particularly pointed outy in the claims.

In the drawings z-Fiffure 1 is a longitudinal section ofthe tie; Fig. 2 is an enlareed plan-view of oneend of the same; and l* ig. 3 is a side-elevation of the rail support.

The body a of the tie is formed of a concrete mixture molded in the requisite shape i and dimensions and having embedded therein iron reinforce bars b which may be disposed in any desired manner. As shown in Fig. l, the tie has its middle and bottom surface arched upward as indicated at u. so

that the end portions alone bear on the ballast orroadbed, thus relieving the tie from bending strains and reducing the liability to breakage.

In each end of the tie under the positions occupied by the rails an iron or other metal casting is embedded. This casting comprises a. face-plate c, which lies flush with the upper surface of the tie, a cylindrical body ortion d, a duct e leading from the face-plate c to the base of the body and an enlarged undercut chamber f roduced by extending Voutward the Walls o the body (l.

The duet e is adapted to be closed by a cover g which is mounted to swing horizontally on the face-plate c so that access may be had to the duct at will. The face-plate c is rovided with opposite notches h communicating with the enlarged chamber f, the purpose of which will hereinafter appear.

The chamber d is adapted to be lled with granular cork or some other elastic or semielastic'substanee. This is indicated at c in the drawings. The duct e is provided to admit of filling the chamber whenever it be- Speicaton of Letters Patent. Patented Apr. 26, 1910.

Application led September 3, 1909'. Serial No. 516.061. l

comes necessary to replenish the suppl i For this' purpose the cover r/ is moved asi e and after the cork is in place the cover may be moved back to close the duct. Movable vertically in the chamber d is a plunger l, i which bea-rs on the cork and is supported thereby. Said plunger has two lugs m projecting oppositely therefrom. These lie in f the enlargement f of the cylinder or body el and serve to limit the vertical motion of the plunger. In introducing the plunger into position the lugs are moved through the notches /L and then the plunver is given a one-quarter turn causing the tugs to lie out of registry with the notches and prevent accidental displacement of the plunger.

.\l its upper end the plunger carries the device for fastening the rail thereon. These consist in lues or arms u projecting oppol sitely from die upper surface of the plunger and lying at the opposite sides of the I rail. Said lugs or arms Iu, have 'guideways In' formed thereon which are undercut to E carry the clamps o in suoli a manner that the clamps may move toward and from the I rail, said clamps overhanging the base of the i rail and holding the rail in place and they I are held in position by means of screws p which are threaded in tlanges u: formed on t the arms n. By means of my invention an indestructil ble tie is provided.4 The stationary portion., 1 of the rail-fastening is embedded as a permanent rigid part. of the tie and .furnishes a seat for the yielding plunger on which the. tic is mounted. ln this manner the rail is held with the'utmost security and is permitted to yield vertically only so that a cushion is aiforded for the tratlie. The cork or other yielding substance lc may .be replaced at any time by the simple operation-of opening the duct e and charging the chamber Z through said duct. i

Having thus described my invention what I' claim as new and desire to secure by Letters Patent of the United States, is: 1. A concrete railway tie having a chambered part embedded therein and a rail supporting part yieldable vertically in the firstnamed`part and means on one of said parts for engaging the other part for limiting the motion of the Tail supporting part.

2. A concrete railway tie having a vertically yielding rail supporting part, clamps guided thereon and means for'pressing the clamps against the base of the rail.

4 call 'a revolution locks the part against 3. A. concrete railway tie having a cylindrical socket, a cylindrical rail supporting part mounted therein and yieldable vertiand means whereby the .rotation of sai supporting part through a portion 0f.

vertical removal from the tie.

' 4. A concrete railway tie having a socket embedded therein and provided with recesses -upon op osite sides thereof adjacent the upper en and a rail supporting part within said socket and means whereby the relative rotation ofu the socket and said parts locks the part against vertical removal. 5'. A concrete railway tie having a cylindrical chamber, a cylindrical rail supporting part mounted therein and yieldable in respect thereto, means for connecting Asaid part to the rail to prevent rotation ofthe of two subscribing Witnesses.

` FRANK E. DAVIDsoN.

Witnesses Isaac B. OWEN s, B. BIGGE. 

